chore(deps): update dependency microsoft.net.test.sdk to v18

Author: renovate[bot]

Doppler.ImageAnalyzer.UnitTests/Doppler.ImageAnalyzer.UnitTests.csproj

@@ -10,7 +10,7 @@
   <ItemGroup>
     <PackageReference Include="AutoFixture" Version="4.18.1" />
     <PackageReference Include="Microsoft.AspNetCore.Mvc.Testing" Version="7.0.20" />
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.13.0" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.0.0" />
     <PackageReference Include="Moq" Version="4.20.72" />
     <PackageReference Include="xunit" Version="2.9.3" />
     <PackageReference Include="xunit.runner.visualstudio" Version="3.1.5">